Specifications:
Bracelet size (mm): 41 x 41 x 11mm
Weight: 51g
Color: light gray, green, red, yellow
Main functions: Motion recording (step counting, distance, calorie calculation), sports mode, message push, information storage, heart rate monitoring, sleep monitoring, blood pressure measurement, blood oxygen saturation measurement, stopwatch, photo control, music control, full font language , 1.3-inch color display.
Chip manufacturer: Han Tianxia
Chip: HS6620D
APP: Da Fit
Compatible system: Android5.1 (included) or above, IOS8.0 included)
FLASH memory: RAM64KB ROM32Mb    
Type: TFT
Screen size: 1.3 inches
Pixel: 240RGB x 240
Touch type : Single touch
BT: BT4.0
WIFI: Not supported
NFC: Not supported
Gravity sensor: support
Gyro: Not supported
Heart rate: Tianyi core
GPS: Not supported
Type of battery : Lithium polymer
Capacity: 170mAh
Charging method: charging stand
Waterproof rating: IP67
Charging time: about 3 hours
Life time: 6-8 days, 20 days standby
Product language: Chinese, Traditional Chinese, English, German, Korean, Spanish, Japanese, French, Russian, Arabic, Ukrainian
Wrist strap size: total length 230MM, adjustable length 120-200MM
Appearance material: Main body: plastic + zinc alloy Wrist strap: thermoplastic elastomer + stainless steel
Box size (L*W*H)MM 75 x 110 x 53mm
Package weight: 128 grams